megaVTEM response over the Caber Deposit
September 16, 2009
VTEM detects the Night Hawk Lake conductor from 705 m above.
Read the case study (PDF)
January 26, 2009
Geoscience BC Releases new Analysis of the QUEST Geochemical Dataset, Z-TEM Data from Mt. Milligan and Preliminary QUEST Project Area Till Geochemistry
"... Geoscience BC is also pleased to announce the release of Geoscience BC Report 2009-7: "Helicopter-Borne Z-Axis Tipper Electromagnetic (ZTEM) and Aeromagnetic Geophysical Survey -- Mt. Milligan Test Block." The release includes a final report for the project, databases and grids, and maps in PDF format, all of which will be available from Geoscience BC's website. Z-TEM is a passive airborne electromagnetic system. It uses the natural time varying changes in the earth's magnetic field to detect conductors, map geology and explore for large poorly conductive features such as regional faults and porphyry copper deposits. Geoscience BC and Terrane Metals Corp partnered on the Z-TEM survey of the Mt Milligan property, which was flown at a 250 m line spacing by Geotech Ltd."
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News archive
VTEM | Airborne Gravity | AFMAG | Hummingbird | Hawk
Click a link for detailed information on each of our systems.
VTEM Technologies
The "VTEM" is the first Time Domain System to offer selectable transmitter wave-form types and associated configurable transmitting loop. Computer controlled power electronics and advanced signal processing software makes the system easily adjustable to different geophysical tasks, from shallow soil mapping to deep ore bodies search. Learn more...
Airborne Gravity
The GT-1A airborne gravimeter brings state-of-the-art design and fully automatic operation to mobile gravimetric measurement. The vertical gravity sensing unit is highly linear and has virtually no cross-coupling, allowing data to be collected during periods of extreme turbulence, changes in flight direction, or turns between lines, thus improving survey efficiency and reducing costs. Learn more...
AFMAG
Unlike other electromagnetic methods the AFMAG utilizes natural alternating magnetic fields in the audio-frequency range. This has advantages over active airborne EM systems using dipole artificial field sources. Such artificial fields decay inversely proportional to the cube of the distance from its source. Responses from deep conductive targets can be very low and masked by noise and anomalies of small but shallow geologic bodies. Learn more...
Hummingbird
The Hummingbird Electromagnetic System was the first successful all Digital Frequency Domain Electromagnetic System. Designed in the early 1990's it employs a novel weight-saving design coupled with advanced digital technology. Continual development over the past 10 years has maintained the multi-frequency Hummingbird as the most advanced Frequency Domain EM System to this day. Learn more...
Hawk
Totally digital on site programmable frequencies. Up to ten frequencies. Wide-band composite signal transmitter. Dipole moment up to 1700 nia. Z and X axis dual geometry coplanar coils. Frequency range 200 Hz to 25 kHz. 1 ppm resolution
Digital signal filters and 50/60 Hz rejection. Automatic calibration and phasing. Built in data acquisition. Z axis coil system option. Learn more...